MT90871 Datasheet, PDF (62/65 Pages) Zarlink Semiconductor Inc – Flexible 8K Digital Switch (F8KDX)

MT90871
Data Sheet
Backplane and Local Output High-Impedance Timing
Characteristic
Sym Min Typ Max Units
Test Conditions
1 STo delay - Active to High-Z
t_DZ
- High-Z to Active
t_ZD
4
ns
R_L=1K, C_L=50pF, See Note 1
4
ns
2 Output Driver Enable (ODE)
Delay to Active Data
Output Driver Enable (ODE)
Delay to High-Impedance
t_ODE
t_ODZ
15
ns
R_L=1K, C_L=50pF, See Note 1
14
ns
R_L=1K, C_L=50pF, See Note 1
Note 1: High Impedance is measured by pulling to mid-rail with RL = 1K/1K potential divider, with timing corrected to cancel time taken
to discharge CL.
CLK
VTT
t_DZ
STo
Valid Data
HiZ
VTT
t_ZD
STo
HiZ
Valid Data VTT
Figure 27 - Serial Output and External Control
ODE
STo
t_ODE
t_ODZ
VTT
Hi-Z ^{Valid Data}
Hi-Z
VTT
Figure 28 - Output Driver Enable (ODE)
62
Zarlink Semiconductor Inc.